I went to a gun show one time and found a barrel for my 870 wingmaster. It was a shorter barrel for a conversion to a tactical shotgun. The person that sold it to me said not to shoot a hot load in it. Well I wounder what does it mean hot load. I guess I should have asked him but now it,s too late. I want to shoot a buck shot in it but I don,t know if I can shoot o-00 or ooo in it. What do you think I should do?